| Abbreviation | Definition |
|---|---|
| IST | Improvising String Trio |
| ISWAK | It Started With A Kiss |
| ITA | Independent Television Authority |
| ITA | International Tape/Disc Association |
| ITC | Independent Television Commission |
| ITCA | Independent Television Companies Association |
| ITE | Interactive Television Entertainment |
| ITFS | Instructional Television Fixed Service |
| ITH | Insert Title Here |
| ITN | Independent Television News |
| ITN | International Textile News |
| ITNG | In The Night Garden |
| ITOB | In the Time Of the Butterflies (novel) |
| ITOR | International Transactions in Operations Research |
| ITP | In The Process |
| ITS | Insertion Test Signal |
| ITT | In These Times |
| ITV | Independent Television |
| ITV | Instructional Television |
| ITVA | International Television Association |